Rainfall is a calm yet engaging web-based game built with HTML, CSS, and JavaScript, where players collect falling raindrops as currency to buy upgrades and unlock new layers of gameplay. With achievements, statistics, and a light progression system, it offers a satisfying sense of growth and replayability. Minimal in design, the game balances relaxation with interactivity, blending the soothing atmosphere of rain with the rewarding loop of clicker mechanics to create a small but complete creative coding experience.